AAP Webinar Series. Vaccine Hesitancy: Advocating for Children April 3, 2015:

Transcription

1 AAP Webinar Series Vaccine Hesitancy: Advocating for Children April 3, 2015: Joseph Domachowske MD, FAAP Professor of Pediatrics Professor of Microbiology and Immunology SUNY Upstate Medical University Syracuse NY 1

2 What Is Vaccine Hesitancy? Intent to skip or delay at least 1 of the vaccines recommended by the Advisory Committee on Immunization Practices (ACIP) Uncertainty as to whether a vaccine should be administered in accordance with the ACIP recommended immunization schedule References: 1. Heller G, Roberts M. Turning the tide: addressing vaccine hesitancy and timely immunizations through a social marketing campaign. Presented at: 44th National Immunization Conference, Atlanta, Georgia, April 21, Abstract Opel DJ, et al. Hum Vaccines. 2011;7(4): Dempsey AF, et al. Pediatrics. 2011;128(5): Gust DA, et al. Pediatrics. 2008;122(4):

3 Vaccine Hesitancy: Not a New Problem Turn of the 19th century: Vaccination is introduced in the US 1809: Massachusetts is the first state to make smallpox vaccination compulsory 1850s: US anti-vaccination movement arises in response to the proliferation of smallpox vaccination mandates Activists object to regulations requiring submission to a procedure that involves discomfort and that might not be safe 1870s: Smallpox re-emerges in the US, as a result of a decline in vaccination rates Opposition to vaccination increases as new laws are passed and old ones to control smallpox are reinforced References: 1. Omer SB, et al. N Engl J Med. 2009;360(19): Colgrove J. State of Immunity: The Politics of Vaccination in Twentieth-Century America. Berkeley, CA: University of California Press;

4 Evolution of Public Health Laws Concerning Vaccination 1905: Jacobson v Massachusetts establishes rights of states to pass and enforce vaccination laws Not a federal jurisdiction 1910: First philosophical exemption law is passed 1922: Supreme Court finds school immunization laws constitutional 1970s: Immunization laws are strengthened and strongly enforced 2015: School immunization laws vary among states 50 states permit medical exemptions 48 states permit religious exemptions 19 states permit personal belief exemptions References: 1. Omer SB, et al. N Engl J Med. 2009;360(19): Dr. John Talarico, California Department of Public Health, personal communication, October 5, National Conference of State Legislatures. States with religious and philosophical exemptions from school immunization requirements. Accessed April 28,

5 Impact of Non-Medical Exemptions on Vaccination Rates Overall mean state-level rates of non-medical exemptions have increased; pace of that increase has accelerated Vaccination coverage rates are lower in states with personal belief exemptions than in states permitting only religious exemptions Children with non-medical exemptions tend to aggregate within schools and communities Vaccine-preventable diseases tend to cluster in areas where exemption rates are highest References: 1. Omer SB, et al. N Engl J Med. 2012;367(12): Omer SB, et al. N Engl J Med. 2009;360(19): Omer SB, et al. JAMA. 2006;296(14): Buttenheim A, et al. Am J Public Health. 2012;102(8):e59-e Centers for Disease Control and Prevention (CDC). MMWR. 2014;63(22): Omer SB, et al. Am J Epidemiol. 2008;168(12): Imdad A, et al. Pediatrics. 2013;132(1): Atwell JE, et al. Pediatrics. 2013;132(4):

6 Role of PBEs in the Resurgence of Pertussis: California, In 2010, the incidence of pertussis was higher in PBE clusters than in areas outside those clusters From , the mean census-tract level rate of PBEs had increased among the state s incoming kindergartners N Miles Pertussis case cluster PBE cluster As illustrated in the larger map, clusters of pertussis cases in California with onset in 2010 overlapped with PBE clusters. The inset shows the relative locations of case clusters and PBE clusters in San Diego County. Reproduced with permission from Pediatrics, Vol. 132, Page 628, Copyright 2013 by the AAP. Reference: 1. Atwell JE, et al. Pediatrics. 2013;132(4):

7 High Incidence of Measles in States That Allow PBEs: US, 2011 Red check marks indicate states that allow PBEs and had a high incidence of measles during 2011 Import-associated a Unknown source a Import-associated describes cases brought into the US from other countries; cases linked epidemiologically to importations of measles into the US; cases with virologic evidence suggesting recent importation; and cases linked to patients with virologic evidence of recent importation. Map reproduced from CDC. 1 References: 1. CDC. MMWR. 2012;61(15): National Conference of State Legislatures. States with religious and philosophical exemptions from school immunization requirements. Accessed April 28,

8 High Prevalence of PBEs Among US Residents With Measles: January 1 May 23, Of the 195 US residents with measles who were unvaccinated against the disease, 85% had philosophical or religious objections. Percentage % Philosophical or religious beliefs 5% 6% 4% Ineligible Reason Missed opportunities Other a Figure reproduced from CDC. 1 Reference: 1. CDC. MMWR. 2014;63(22):

9 It s a small world after all Disneyland is the epicenter of the 2015 outbreak Nearly 200 cases over 17 states Almost all cases where details are known have been in unimmunized or under-immunized This outbreak has reinvigorated discussions in several states about the public health impact of PBEs Will anything change? 9

10 What about Adolescents Vaccine hesitancy is not restricted to parents of young children Substantial hesitancy remains among parents of teens, particularly around influenza and HPV vaccines What does the national coverage look like for vaccines routinely recommended by ACIP for our teens? 10

11 86% 78% NIS-Teen Vaccine Rates

12 State by State Healthy People 2020 goal is for 80% or more of yr olds to have received Tdap, MCV4, and 3 doses of HPV (females only for now) 42 states exceed 80% for Tdap 18 states exceed 80% for MCV4 0 states exceed 80% for HPV Rhode Island leads at 57%, most states around 40% 12

13 State laws requiring vaccines for middle school Tdap: 46 states and DC MCV4: 21 states and DC HPV: only DC Influenza: none Although preschool requirement now for 2 states and NYC 13

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15 Strategies to improve vaccine rates State mandates make a clear difference New mandates are now met with suspicion and reluctance Making a vaccine required for school entry (or for work, as in HCP) may have negative consequences as well What is the federal government s role here? 15

16 What is the Role of the Federal Government? Developing Vaccine Recommendations and Policy 16

17 Development of Vaccine Recommendations & Policies Vaccine development and testing Submission to FDA for Biologics License Application (BLA) Vaccines and Related Biological Products Advisory Committee (VRBPAC) ADVISES FDA Licensure Advisory Committee on Immunization Practices (ACIP) Federal and State laws and regulations ADVISES CDC consideration Policy established, Recommendations for use published in MMWR Uptake and financing AAP / ACP Board of Directors Consideration Recommendations for use published Pediatrics, Annals Int Med, Amer Family Physician ADVISES AAP Committee on Infectious Diseases (COID) Red Book ACP Adult Immunization Initiative Physician Advisory Board Insurance, Medicare, Medicaid, VFC: plans and policies Public sector Private sector

18 US Immunization Policy Timeline: Key Milestones 1955: Poliomyelitis Vaccination Assistance Act start of Federal funding for immunization 1962: Creation of the immunization grant program (Section 317) 1963: Creation of National Immunization Program at CDC 1964: Establishment of Advisory Committee on Immunization Practices (ACIP) 1972: Federal Advisory Committee Act (FACA) ACIP designated as a Federal Advisory Committee 1986: Creation National Injury Compensation Program 1993: Childhood Immunization Initiative Vaccines for Children (VFC) Program adopted 18

19 Immunization Recommending Bodies Establishes National IZ Policy, Develops National recommendations X Advisory Committee on Immunization Practices THE KEY DECISON BODY X American Academy of Pediatrics Committee on Infectious Diseases Red Book Advocacy for members, Provide recommendation s for members X X American Academy of Family Physicians American College of Physicians X American College of Obstetricians and Gynecologists

20 ACIP Background ACIP established 1964 by US Public Health Service Role: provide advice and guidance to CDC Director and HHS Secretary on most effective means to prevent vaccine-preventable diseases in the civilian population FDA-licensed vaccines (and unlicensed vaccines if warranted) Vaccines related agents (e.g., antisera, immune globulins, antivirals) 3 meetings annually February, June, October; each meeting is 2 days 20

21 ACIP Background Agenda items Topics solicited from ACIP members, liaisons, CDC staff and others Finalized by ACIP Steering Committee Emergency meeting can be called if warranted Follow FACA rules and procedures including meetings that are open to the public with time for public comment Meeting slides, live webcast archive, minutes posted on ACIP website Recommendations become final once approved by CDC Director and published in MMWR 21

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23 The ACIP Process: Considerations in Development of Recommendations FDA licensed indications and schedule Disease burden, morbidity and mortality overall and in high risk groups Data on safety and efficacy/effectiveness in general and in specific groups Acceptability/Feasibility in the context of existing recommendations Equity in access to vaccine and good use of public funds (cost effectiveness) Recommendations of other groups (e.g., AAP, AAFP, ACP, ACOG) 23

24 Evidence Based Recommendations (EBR) EBR approach approved by ACIP in October 2010 System to be used: Grading of Recommendations, Assessment, Development and Evaluation (GRADE) framework* Implemented to date: HPV vaccine in males Hepatitis B vaccine in people with diabetes mellitus Pneumococcal vaccines Meningococcal vaccines Influenza vaccines * Ahmed F et al. Methods for developing evidence-based recommendations by the ACIP Vaccine 2011;29(49):

25 FDA vs ACIP FDA licenses the vaccine Safe and effective ACIP sets policy and recommended use ACIP policy not same as FDA approval/indication Tdap over age 65 MCV4 two doses for all teens Zoster ages

26 Immunization Policy Product: Two Immunization Schedules ACIP establishes National immunization policy 1. ACIP, AAP, and AAFP produce a harmonized childhood and adolescent immunization schedule with each vaccine in the context of the other vaccines 2. ACIP, AAFP, ACP and ACOG produce a harmonized adult immunization schedule with each vaccine in the context of the other vaccines Both schedules: updated annually published in January: MMWR, Pediatrics, Annals Internal Medicine, American Family Physician 26

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28 DISCUSSION 28